#include <iostream>
#include <fstream>
using namespace std;

void back(int k);

int n;
int x[20];
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");

int main()
{
    fin >> n;
    back(0);
    cout << n << endl;
    return 0;
}

void back(int k){
    if(k==n){
        int counter=0;
        for(int i=0; i<n;i++){
            if(x[i] == 1){
                fout << i+1 << " ";
                counter++;
            }
        }
    if(counter >0)
        fout << '\n';
    }
    else{
        x[k]=0;
        back(k+1);
        x[k]=1;
        back(k+1);
    }
}